The Oxford Thesaurus An A-Z Dictionary of Synonyms - vetov.

1) stop, block, deny, ban, turn down, reject, disallow, rule out, quash, prevent, prohibit, interdict, taboo, outlaw, proscribe, preclude, Colloq put the kibosh on, kill, nix: Father vetoed the idea that we go to Brighton for the holiday. Any measure he proposed was summarily vetoed. --n. 2) denial, ban, stoppage, block, embargo, turn-down, rejection, disallowance, quashing, prevention, prohibition, interdiction, taboo, proscription, preclusion, vetoing, Colloq killing, nixing: The home secretary's veto of the abortion measure greatly angered the women's groups.